Automatic felt-tightener for paper-making machines.



W. J. TREMPE. AUTOMATIC FELT TIGHTENER FOR PAPER MAKING MACHINES.

' APPLICATION FILED PEB.17, 1908.

934,857, Patented Sept. 21, 1909.

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WILLIAM J. TREMPE, OF EAST RYEGATE, VERMONT.

AUTOMATIC FELT-TIGHTENER FOR PAPER-MAKING MACHINES.

Specification of Letters Patent.

Application filed February 17, 1908. Serial N 0. 416,289.

To all whom it may concern:

Be it known that I, WlLLIAM J. TREMPE, a citizen of the United States,residing at East Ryegate, inthe. county of Caledonia and Stateof'Vermont, have invented certain new and useful Improvements inAutomatic Felt-Tighteners for Paper-Making Machines,.of which thefollowing is a specilication, reference being had therein to theaccompanying drawing.

My present invention relates to improve ments in automatic felttightencrs for paper making machines, and although it'has specialreference to felt tighteners on drier felts, I have found it useful inconnection with wet felts.

The principal idea of my'invntion is to haveto' use the positive screw,as now used, my invention, having a frame and track, which can beattached at any place on the drier frame.

To more clearly illustrate my invention, attention is invited 'to theaccompanying drawings, in which 'Figure l is a side elevation of myinven tion attached to the upper plates of a paper making machine. Fig.2 is atop plan view thereof, and Fig. 3 is a longitudinal sectiontakenon line m-00 of Fig. 2, looking in the direction of the arrow.

Referring to the drawings :The numeral 1 designates the upper plates ofa paper making machine, to which I attach my toothed racks 2, which arealso provided with the smooth surface 3. Adapted to engage the teeth ofthe racks are the two pinions or gears 4, keyed .upon the shaft 5, whichpasses through the sides 6 of the car riagev frame, the opposite end ofthe frame and carrying the flange wheels 8, which engage the smoothportions 4 of the racks, and hold the carriage against lateral movement.

Adjustably secured to the inner face of the sides 6, by means of bolts9, is the plate 10, carrying the bearer or hanger 11, for the shaft 12of the stretching or tightening roll 13, to which is attached the felt14.

Connected to the frame is a rod 15, to which is connected a pulley cord16, the said pulley cord passing over mounted upon the rod 18, and alsoover a pulley 19, below which it is attached to a '20, which at alltimeshas balancing weight a tendency to move the carriage in the direcapulley 17,

a shaft 7 being mounted in tion of the arrow, Fig. 1 and thus keep thefelt l4 taut.

From the foregoing description taken in connection with the drawings, itis evident that i provide an automatic device whereby the stretching andtightening roll of the paper making machine is evenly stretched ortightened and the breaking of the felt is prevented.

"What I claim as new and desire to secure by Letters Patent, is, c

1. In combination with a paper making machine, having a pair' of tracksmounted upon opposite sides thereof and substantially the full lengththereof, each of said tracks having an outer toothed rack and an, innersmooth raised track, a carriage having its sides held together by meansof transverse Patented Sept. 2311, 119ml).

rods, a pairof flanged Wheels journaled upon the ends of the forward rodexterior of the carriage and fitting upon the inner smooth tracks of thepair of tracks, a pair of toothed wheels meshing with the toothed rackscarried upon the ends of the other rod and exterior of the carriage,plates secured to the carriage intermediate of the transverse rods, aplates, and means connected to the carriage for holding the paper tautbetween the roll and machine.

2. In combination with a paper making machine, having a pair of tracksmounted thereon the full length thereof, said tracks each having aninterior raised smooth portion and an exterior lowered toothed rack, acarriage having two side frames, plates mounted upon the interior ofsaid frames and projecting above the same, a roll journaled in saidplates. and above and between the frames, a pair of flanged Wheelscarried by the forward portion of the carriage exterior of the framesmounted upon the raised smooth portion'of the tracks, a pair of toothedwheels carried by the rear portion ofthe carriage exterior of the framesmeshing with the toothed rack, and a device for holding the paper tautbetween the roll and the machine, said device being connected to thecarriage.

In testimony whereof i aiiix my signature in presence oftwo Witnesses.

RAYMOND L. LILLEY, Emmy A. Arena.

roll journaled in said

